| 1. |
- Hey Tow, Kenny, et al.
(author)
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Monitoring mining induced seismicity using optical fibre sensors during mine exploitation
- 2023
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In: Proc SPIE Int Soc Opt Eng. - : SPIE. - 1996-756X .- 0277-786X. - 9781510665002
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Conference paper (peer-reviewed)abstract
- Fibre-optic based sensing technologies are becoming popular in the field of geophysics since enable long range and high spatial resolution acoustic measurements. In this work, we present preliminary results obtained using quasi-distributed Fibre-Bragg grating sensing and Distributed Acoustic Sensing (DAS) to monitor seismic activities in an operational underground mine. 12 FBGs and 800 metres of fiber optic cable was installed in the tunnel lining an operational mine and recorded mine seismicity such as production blasts and a small seismic activity of magnitude 1.41 in September 2022.
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| 2. |
- Hey Tow, Kenny, et al.
(author)
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Nanocomposite-coated optical fibres for improved distributed sensing performance in harsh environment
- 2023
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In: <em>Proceedings - 28th International Conference on Optical Fiber Sensors, OFS 2023</em>. - : Optical Society of America.
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Conference paper (peer-reviewed)abstract
- Draw tower fabrication of a novel optical fibre with nanocomposite polymer coating is reported. Preliminary results show it is more robust to high-temperature ageing, and moisture-induced strain than standard polymer fibres when used for distributed sensing.
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| 3. |
- Lindblom, Magnus, et al.
(author)
-
Flexible Liquid-Filled Scintillating Fibers for X-Ray Detection
- 2023
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In: 2023 IEEE SENSORS, SENSORS 2023 - Conference Proceedings. - : Institute of Electrical and Electronics Engineers (IEEE).
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Conference paper (peer-reviewed)abstract
- We present the design and fabrication of flexible, liquid-filled scintillating fibers for X-ray detection made from silica fibers and silica capillaries. The scintillating fibers were characterized using ultraviolet light exposure and we also performed an experiment demonstrating X-ray detection.
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| 4. |
- Lindblom, Magnus, et al.
(author)
-
Refractory Lining Health Monitoring Based on Raman Optical Time Domain Reflectometry
- 2023
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In: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 9781510665002
-
Conference paper (peer-reviewed)abstract
- A fiber optic health-monitoring system for refractory lining in steel-making processes is presented. Its applicability as an early-warning system for lining damage is demonstrated by the results obtained in a field trial, in which 240 m of fiber was embedded in the lining of an electric arc furnace. The system is based on Raman distributed sensing and polyimide coated fibers in metal tube. The results presented from temperature cycling and calibration at temperatures up to 600 °C show that adequate accuracy and stability for the application can be attained.
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